Physics, 17.12.2019 02:31, ladnerhailey16
Apot on the stove contains 200 g of water at 20°c. an unknown mass of ice that is originally at −10°c is placed in an identical pot on the stove. heat is then added to the two samples of water at precisely the same constant rate. assume that this heat is transferred immediately to the ice or water (in other words, neglect the increase in temperature for the pot). we will also neglect evaporation. the ice melts and becomes water, and you observe that both samples of water reach 55.0°c at the same time.
(a) how does the mass of the original piece of ice in the second pot compare to the mass of the water in the first pot?
the mass of the ice is smaller than the mass of the water.
the mass of the ice is larger than the mass of the water
the mass of the ice is the same as the mass of the water.
there's not enough information to answer this question.
(b) which system will reach 80°c first?
Answers: 3
Physics, 22.06.2019 14:00, batmanmarie2004
Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?
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Physics, 22.06.2019 18:30, sarinaneedshelp01
A1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. what is the magnitude of the friction force required to keep the car from sliding?
Answers: 3
Physics, 23.06.2019 00:50, kinderc9330
Based on details in the riddle of the rosetta stone, which statement best describes jean-baptiste fourier’s influence on jean-françois champollion?
Answers: 2
Apot on the stove contains 200 g of water at 20°c. an unknown mass of ice that is originally at −10°...
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